Improved load order for fluxes in the metabolic map.

Fixes #12.
Using default iJO model in cobrapy.

Closes #10.
Improved the build code for generating self-contained js files.

Now there are 2 build files: one for uglified and one for non-uglified
javascript.

Also fixed the loading issues, and removed jquery and jquery-ui from the
package.

Fixes #9.
Modified category-legend for bar blot for paper.

Also fixed an issue with SVG text attributes for Illustrator import.
See https://github.com/zakandrewking/visbio/wiki/performance-notes.
Merge branch 'fix/legend-mods' of github.com:zakandrewking/visbio into fix/legend-mods